Used on nimitz class cvn. 0.7500" overall length 2 holes 1/8 in. deep, for assembly; material nickel copper alloy, per qq-n-281 22c solid, external flange one end
Used on B02A. 0.6600" overall length name on t.o. 4W3-4-482, figure 8-4, is rotor drive key pilot hole repair bushing; outside diameter has protective coating of ivd aluminum, type ii, class 3, per mil-c-83488; coating optional on inside diameter 17c solid, plain, no outside flanges